Twenty-one cases of the Zika virus have been reported in Bangkok's Sathon central business district, and officials are now watching for more possible infections in severaladjacent districts.
Dr Wantanee Wattana, deputy permanent secretary for the Bangkok Metropolitan Administration (BMA), said those infected included a formerly pregnant woman whose husband had just returned from Singapore, local media reported on Saturday.
The woman had a high temperature, rashes, joint pain and red eyes. She contracted the virus in the 37th week of her pregnancy but has since given birth and both the mother and her newborn are safe.
A survey found many mosquito-breeding areas within a 100-metre radius of the family's residence. Health surveillance of infected people will remain active in the area for the next 30 days and in districts adjacent to Sathon.